Prev: [PATCH 2/2] scripts/kernel-doc: handle/ignore __aligned
Next: [PATCH 12/14] tags: recognize compat syscalls
From: Jason Baron on 16 Mar 2010 13:50
Hi,

Re-post to add infrastructure for compat syscall event tracing support. This
patch series also adds x86_64 arch specific support as an example consumer
of the new infrastructure.

Arches can request compat syscall tracing by setting:
__HAVE_ARCH_FTRACE_COMPAT_SYSCALLS, if CONFIG_COMPAT and CONFIG_FTRACE_SYSCALLS
are set. Arches then need to implement the following interfaces:

1) int is_compat_task(void);
- most arches seem to have this already
2) unsigned long arch_compat_syscall_addr(int nr);
- returns a pointer to the compat syscall entry corresponding to syscall 'nr'
3) int NR_syscalls_compat;
- number of entries in the compat syscall table.

thanks,

-Jason

Changes in v3:

- create a separate "compat_syscalls" event subsystem
- ARCH_COMPAT_SYSCALL_DEFINE#N() tacks "sys32" to start of syscall name
- COMPAT_SYSCALL_DEFINE#N() tacks "compat_sys" to start of syscall name
- both above macros create perf events as: [enter|exit]_compat_sys_blah
- non-compat syscall naming changes to: [enter|exit]_sys_blah
- removes any unreferenced compat syscalls from debugfs

Heiko Carstens (1):
compat: have generic is_compat_task for !CONFIG_COMPAT

Jason Baron (13):
x86: add NR_syscalls_compat, make ia32 syscall table visible
x86: add arch_compat_syscall_addr()
tracing: remove syscall bitmaps in preparation for compat support
tracing: move __start_ftrace_events and __stop_ftrace_events to
header file
tracing: add tracing support for compat syscalls
syscalls: add ARCH_COMPAT_SYSCALL_DEFINE()
x86, compat: convert ia32 layer to use
syscalls: add new COMPAT_SYSCALL_DEFINE#N() macro
compat: convert to use COMPAT_SYSCALL_DEFINE#N()
compat: convert fs compat to use COMPAT_SYSCALL_DEFINE#N() macros
tags: recognize compat syscalls
cleanup: remove arg from TRACE_SYS_ENTER_PROFILE_INIT() macro
tracing: make a "compat_syscalls" tracing subsys

arch/s390/include/asm/compat.h | 7 --
arch/s390/kernel/ptrace.c | 2 +-
arch/s390/kernel/setup.c | 2 +-
arch/s390/mm/mmap.c | 2 +-
arch/x86/ia32/ia32entry.S | 3 +
arch/x86/ia32/sys_ia32.c | 106 ++++++++++++++--------------
arch/x86/include/asm/compat.h | 2 +
arch/x86/include/asm/syscall.h | 5 ++
arch/x86/kernel/ftrace.c | 8 ++
drivers/s390/block/dasd_eckd.c | 2 +-
drivers/s390/block/dasd_ioctl.c | 1 +
drivers/s390/char/fs3270.c | 1 +
drivers/s390/char/vmcp.c | 1 +
drivers/s390/cio/chsc_sch.c | 1 +
drivers/s390/scsi/zfcp_cfdc.c | 1 +
fs/compat.c | 147 +++++++++++++++++++--------------------
include/linux/compat.h | 9 +++
include/linux/ftrace_event.h | 3 +
include/linux/syscalls.h | 91 +++++++++++++++++-------
include/trace/syscall.h | 8 ++
kernel/compat.c | 106 ++++++++++++++---------------
kernel/trace/trace.h | 2 +
kernel/trace/trace_events.c | 3 -
kernel/trace/trace_syscalls.c | 124 +++++++++++++++++++++++++--------
scripts/tags.sh | 8 ++-
25 files changed, 392 insertions(+), 253 deletions(-)

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
 | 
Pages: 1
Prev: [PATCH 2/2] scripts/kernel-doc: handle/ignore __aligned
Next: [PATCH 12/14] tags: recognize compat syscalls